The PCB in an Ideal Logic or Vogue boiler is the central control unit governing every aspect of the boiler’s operation — from ignition timing to gas valve modulation, pump control, fan speed, and the full chain of safety interlocks that protect against overheating, low pressure, and ignition failure.
When an Ideal PCB fails, the boiler typically enters a persistent fault state that cannot be resolved by resetting.
Fault Codes Indicating PCB Failure
L2 — Fan or PCB Fault: L2 on the Ideal Logic is a compound fault code that can indicate either fan motor failure or PCB fan drive circuit failure.
- If the fan runs at startup but L2 still triggers: suspect the air pressure switch or PCB
- If the fan doesn’t run at all: check fan motor supply and motor resistance first
- If power is confirmed to the fan but the motor doesn’t run: the PCB fan drive circuit has likely failed
F2 — Ignition Failure: After confirming gas supply, checking the ignition electrode, and testing the ignition lead, the remaining diagnosis points to the PCB ignition module.
PCB Identification for Ideal Models
The Ideal Logic and Vogue ranges use different PCBs, and within each range, PCB architecture has changed between product generations:
- Ideal Logic+ (current range): Uses a specific PCB with integrated display driver. Not compatible with earlier Logic generation.
- Ideal Logic (first generation): Uses an earlier PCB architecture.
- Ideal Vogue GEN2: Uses a completely different PCB system from Logic range — do not cross-reference.
- Ideal Icos/Isar (legacy): PCBs are approaching end-of-production. Call to confirm availability.
Locate the GC (Gas Council) number on the boiler’s data plate to confirm model identity. Call our helpline: 0330 124 5678.
Ideal PCB and Warranty
Ideal’s 10-year warranty on Logic+ models requires the use of OEM parts for any repairs. A non-OEM PCB fitted to a Logic+ under warranty will void that warranty. We stock only genuine Ideal OEM PCBs.
Installation Notes
Ideal PCB replacement is a Gas Safe engineer task. After PCB replacement:
- Power up without attempting ignition — check for fault codes
- Confirm no wiring fault codes before proceeding to ignition test
- Complete a full operational test including CH mode and DHW mode (if combi)
- Test all safety cutouts
Need a Recommended Installer?
- HGB Heating Kent — Gas Safe engineers, Ideal specialists, Kent and Medway
- Boiler Sense — Certified boiler specialists, Kent and South East London